/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package controller;

import accessor.WareHouse;
import accessor.WareHouseAccessor;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@WebServlet(name = "update_warehouse", urlPatterns = {"/update_warehouse"})
public class update_warehouse extends HttpServlet {
    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        WareHouseAccessor accessor = new WareHouseAccessor();
        WareHouse wareHouse = new WareHouse();
        int wareHouseID = Integer.parseInt(request.getParameter("wareHouseID"));
        String warehouse_name = request.getParameter("warehouse_name")!=null?request.getParameter("warehouse_name"):"";

        try {
            if (request.getParameter("submit") == null) {
                request.getSession().removeAttribute("update_warehouse_name");
                request.getSession().removeAttribute("updateWareHouseError");
                response.sendRedirect("admin/update_warehouse.jsp?wareHouseID=" + wareHouseID);
            } else {
                int errorList = 0;
                if (warehouse_name.equals("")) {
                    request.getSession().setAttribute("update_warehouse_name","<p>You must enter warehouse name!</p>");
                    errorList ++;
                }

                if (errorList ==0) {
                    wareHouse.setWareHouseID(wareHouseID);
                    wareHouse.setWareHouseName(warehouse_name);

                    int retVal = 0;
                    retVal = accessor.updateWareHouse(wareHouse);
                    if (retVal == 1) {
                        request.getSession().removeAttribute("updateWareHouseError");
                        request.getSession().removeAttribute("update_warehouse_name");
                        request.getSession().setAttribute("mess_warehouse", "Update successful!");
                        response.sendRedirect("admin/list_warehouse.jsp");
                    } else {
                        request.getSession().setAttribute("updateWareHouseError", "Update Fail! Try again!");
                        response.sendRedirect("admin/update_warehouse.jsp?wareHouseID=" + wareHouseID);
                    }
                } else {
                    response.sendRedirect("admin/update_warehouse.jsp?wareHouseID=" + wareHouseID);
                }
            }
        }catch(Exception e){
            e.printStackTrace();
        }
        finally {
            out.close();
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
